QUICK-SETTING SPRAY CEMENT CONCRETE COMPOSITION, QUICK-SETTING SPRAY CEMENT CONCRETE, AND SPRAY MATERIAL USING THE CEMENT CONCRETE

摘要

PROBLEM TO BE SOLVED: To provide a quick-setting spray cement concrete composition which is used when spraying to the exposed ground surface of a road, a railroad and a tunnel such as a penstock and to provide quick-setting spray cement concrete and a spray material using the quick-setting spray cement concrete.;SOLUTION: The quick-setting spray cement concrete composition comprises cement, calcium aluminate, gypsum, alkali metal aluminate and a high-performance water reducing agent. The gypsum is 40-60 parts on the basis of 100 parts total amount of the calcium aluminate and the gypsum and the high-performance water reducing agent is 0.05-3 parts on the basis of 100 parts cement.;COPYRIGHT: (C)2008,JPO&INPIT